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2021-01-22Merge release-20210112.0-64-g9f46328e1 (automated)gVisor bot
2021-01-21Only use callback for GetLinkAddressGhanan Gowripalan
GetLinkAddress's callback will be called immediately with a stack.LinkResolutionResult which will hold the link address so no need to also return the link address from the function. Fixes #5151. PiperOrigin-RevId: 353157857
2021-01-22Merge release-20210112.0-63-g8ecff1890 (automated)gVisor bot
2021-01-21Do not cache remote link address in RouteGhanan Gowripalan
...unless explicitly requested via ResolveWith. Remove cancelled channels from pending packets as we can use the link resolution channel in a FIFO to limit the number of maximum pending resolutions we should queue packets for. This change also defers starting the goroutine that handles link resolution completion to when link resolution succeeds, fails or gets cancelled due to the max number of pending resolutions being reached. Fixes #751. PiperOrigin-RevId: 353130577
2021-01-21Merge release-20210112.0-60-g89df5a681 (automated)gVisor bot
2021-01-21Queue packets in WritePackets when resolving link addressGhanan Gowripalan
Test: integration_test.TestWritePacketsLinkResolution Fixes #4458. PiperOrigin-RevId: 353108826
2021-01-21Merge release-20210112.0-59-g0ca4cf769 (automated)gVisor bot
2021-01-21Populate EgressRoute, GSO, Netproto in NICGhanan Gowripalan
fdbased and qdisc layers expect these fields to already be populated before being reached. PiperOrigin-RevId: 353099492
2021-01-21Merge release-20210112.0-56-g2c58af226 (automated)gVisor bot
2021-01-20Update splice syscall documentation.Dean Deng
PiperOrigin-RevId: 352954044
2021-01-21Merge release-20210112.0-54-gb0136253e (automated)gVisor bot
2021-01-20Remove unimplemented message for SO_LINGERNayana Bidari
- Removes the unimplemented message for SO_LINGER - Fix the length for IP_PKTINFO option PiperOrigin-RevId: 352917611
2021-01-20Don't use task goroutine context in fsimpl tests.Jamie Liu
PiperOrigin-RevId: 352908368
2021-01-21Merge release-20210112.0-51-g55332aca9 (automated)gVisor bot
2021-01-21Merge release-20210112.0-50-gca9a45f28 (automated)gVisor bot
2021-01-20Move Lock/UnlockPOSIX into LockFD util.Dean Deng
PiperOrigin-RevId: 352904728
2021-01-20Fix refcount increments in gofer.filesystem.Sync.Jamie Liu
Fixes #5263 PiperOrigin-RevId: 352903844
2021-01-21Merge release-20210112.0-49-g9af6150b5 (automated)gVisor bot
2021-01-20Remove string allocation from strings.Repeat() in /proc/[pid]/maps.Jamie Liu
PiperOrigin-RevId: 352894106
2021-01-20Merge release-20210112.0-48-g286516640 (automated)gVisor bot
2021-01-20Change the way the IP options report problemsJulian Elischer
The error messages are not needed or used as these are not processing errors so much as errors to be reported back to the packet sender. Implicitly describe whether each error should generate ICMP packets or not. Most do but there are a couple that do not. Slightly alter some test expectations for Linux compatibility and add a couple more. Improve Linux compatibility on error packet returns. Some cosmetic changes to tests to match the upcoming packet impact version of the same tests. PiperOrigin-RevId: 352889785
2021-01-20Merge release-20210112.0-47-g7ff5ceaea (automated)gVisor bot
2021-01-19Do not have a stack-wide linkAddressCacheGhanan Gowripalan
Link addresses are cached on a per NIC basis so instead of having a single cache that includes the NIC ID for neighbor entry lookups, use a single cache per NIC. PiperOrigin-RevId: 352684111
2021-01-19Merge release-20210112.0-46-g48ea2c34d (automated)gVisor bot
2021-01-19platform/ptrace: workaround a kernel ptrace issue on ARM64Andrei Vagin
On ARM64, when ptrace stops on a system call, it uses the x7 register to indicate whether the stop has been signalled from syscall entry or syscall exit. This means that we can't get a value of this register and we can't change it. More details are in the comment for tracehook_report_syscall in arch/arm64/kernel/ptrace.c. This happens only if we stop on a system call, so let's queue a signal, resume a stub thread and catch it on a signal handling. Fixes: #5238 PiperOrigin-RevId: 352668695
2021-01-19Merge release-20210112.0-45-gbe17b9444 (automated)gVisor bot
2021-01-19Per NIC NetworkEndpoint statisticsArthur Sfez
To facilitate the debugging of multi-homed setup, track Network protocols statistics for each endpoint. Note that the original stack-wide stats still exist. A new type of statistic counter is introduced, which track two versions of a stat at the same time. This lets a network endpoint increment both the local stat and the stack-wide stat at the same time. Fixes #4605 PiperOrigin-RevId: 352663276
2021-01-19Merge release-20210112.0-43-ga2ec1932c (automated)gVisor bot
2021-01-19Drop CheckLocalAddress from LinkAddressCacheGhanan Gowripalan
PiperOrigin-RevId: 352623277
2021-01-18Merge release-20210112.0-41-gf5736fa2b (automated)gVisor bot
2021-01-17Do not use a stack-wide queue of pending packetsGhanan Gowripalan
Packets may be pending on link resolution to complete before being sent. Link resolution is performed for neighbors which are unique to a NIC so hold link resolution related state under the NIC, not the stack. Note, this change may result in more queued packets but that is okay as RFC 4861 section 7.2.2 recommends that the stack maintain a queue of packets for each neighbor that is waiting for link resolution to complete, not a fixed limit per stack. PiperOrigin-RevId: 352322155
2021-01-16Merge release-20210112.0-40-gcd75bb163 (automated)gVisor bot
2021-01-15Resolve known link address on route creationGhanan Gowripalan
If a Route is being created through a link that requires link address resolution and a remote address that has a known mapping to a link address, populate the link address when the route is created. This removes the need for neighbor/link address caches to perform this check. Fixes #5149 PiperOrigin-RevId: 352122401
2021-01-16Merge release-20210112.0-39-g2814a032b (automated)gVisor bot
2021-01-15Support GetLinkAddress with neighborCacheGhanan Gowripalan
Test: integration_test.TestGetLinkAddress PiperOrigin-RevId: 352119404
2021-01-16Merge release-20210112.0-38-gfd5b52c87 (automated)gVisor bot
2021-01-15Only pass stack.Route's fields to LinkEndpointsGhanan Gowripalan
stack.Route is used to send network packets and resolve link addresses. A LinkEndpoint does not need to do either of these and only needs the route's fields at the time of the packet write request. Since LinkEndpoints only need the route's fields when writing packets, pass a stack.RouteInfo instead. PiperOrigin-RevId: 352108405
2021-01-16Merge release-20210112.0-37-g12d979083 (automated)gVisor bot
2021-01-15Remove count argument from tcpip.Endpoint.ReadTamir Duberstein
The same intent can be specified via the io.Writer. PiperOrigin-RevId: 352098747
2021-01-15Merge release-20210112.0-36-gf37ace666 (automated)gVisor bot
2021-01-15Merge release-20210112.0-35-gec9e263f2 (automated)gVisor bot
2021-01-15Merge release-20210112.0-34-g55c7fe48d (automated)gVisor bot
2021-01-15[rack] Retransmit the probe segment after the probe timer expires.Ayush Ranjan
This change implements TLP details enumerated in https://tools.ietf.org/html/draft-ietf-tcpm-rack-08#section-7.5.2. Fixes #5084 PiperOrigin-RevId: 352093473
2021-01-15Correctly return EMSGSIZE when packet is too big in raw socket.Ting-Yu Wang
IPv4 previously accepts the packet, while IPv6 panics. Neither is the behavior in Linux. splice() in Linux has different behavior than in gVisor. This change documents it in the SpliceTooLong test. Reported-by: syzbot+b550e78e5c24d1d521f2@syzkaller.appspotmail.com PiperOrigin-RevId: 352091286
2021-01-15Populate EgressRoute, GSO, Netproto for batch writesGhanan Gowripalan
We loop over the list of packets anyways so setting these aren't expensive. Now that they are populated only by the link endpoint that uses them, TCP does not need to. PiperOrigin-RevId: 352090853
2021-01-15Merge release-20210112.0-32-g9db126eb6 (automated)gVisor bot
2021-01-15Combine reference count logs into one message.Dean Deng
Otherwise, races can occur between concurrent logs. PiperOrigin-RevId: 352086914
2021-01-15Merge release-20210112.0-30-gf1420cf48 (automated)gVisor bot
2021-01-15Add sanity check on return values from WriteTing-Yu Wang
io.Writer.Write requires err to be non-nil if n < len(v). We could allow this but it will be irreversible if users depend on this behavior. Ported the test that discovered this. PiperOrigin-RevId: 352065946
2021-01-15Merge release-20210112.0-28-g714a020ab (automated)gVisor bot
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